diff --git a/include/simple2ddata.h b/include/simple2ddata.h
index 527e139..9347ec4 100644
--- a/include/simple2ddata.h
+++ b/include/simple2ddata.h
@@ -43,3 +43,36 @@ class Simple2DData: public BaseData
  real XStep() const { return xstep; }
  real YStep() const { return ystep; }
 };
+
+class Rect2DData: public BaseData
+{
+ std::vector<real> lon, lat;
+
+ public:
+ using BaseData::IsFill;
+ using BaseData::V;
+ using BaseData::operator();
+ Rect2DData() = default;
+
+ Rect2DData(const std::vector<real>& lons, const std::vector<real>& lats, MString&& unit = ""): BaseData(lons.size() * lats.size(), std::move(unit)), lon(lons), lat(lats) {}
+
+ const real& V(size_t ix, size_t iy) const { return V(iy * Nx() + ix); }
+ real&       V(size_t ix, size_t iy) { return V(iy * Nx() + ix); }
+
+ const real& operator()(size_t ix, size_t iy) const { return V(iy * Nx() + ix); }
+ real&       operator()(size_t ix, size_t iy) { return V(iy * Nx() + ix); }
+
+ size_t Nx() const { return lon.size(); }
+ size_t Ny() const { return lat.size(); }
+
+ bool IsFill(size_t ix, size_t iy) const { return IsFill(iy * Nx() + ix); }
+
+ real Lon(size_t ix, [[maybe_unused]] size_t iy) const { return lon[ix]; }
+ real Lat([[maybe_unused]] size_t ix, size_t iy) const { return lat[iy]; }
+
+ real Lon(size_t i) const { return Lon(i % Nx(), i / Nx()); }
+ real Lat(size_t i) const { return Lat(i % Nx(), i / Nx()); }
+
+ real Ix2Lon(size_t ix) const { return lon[ix]; }
+ real Iy2Lat(size_t iy) const { return lat[iy]; }
+};